Maturidade do ovário no cascudo Hypostomus strigaticeps (Siluriformes, Loriicaridae) - DOI: 10.4025/actascibiolsci.v30i1.1474

Erico Luis Hoshiba Takahashi; Roberto Gointein; Laura Satiko Okada Nakaghi

doi:10.4025/actascibiolsci.v30i1.1474

Ovarian organization and maturity stages of armored catfish Hypostomus strigaticeps (Siluriformes, Loriicaridae) - DOI: 10.4025/actascibiolsci.v30i1.1474

Erico Luis Hoshiba Takahashi UNESP
Roberto Gointein UNESP
Laura Satiko Okada Nakaghi UNESP

DOI: https://doi.org/10.4025/actascibiolsci.v30i1.1474

Abstract

This work studied the ovarian development of the armored catfish Hypostomus strigaticeps. Between July 2002 and June 2005, 332 females were collected monthly from the Corumbataí River, São Paulo State – Brazil. The ovaries were processed using routine histological techniques – paraffin inclusion and 5 μm thick sections stained in hematoxylin-eosin. Six types of oocytes were observed: Chromatin-nucleolus, Perinucleolar, Cortical-alveolus, Vitellogenic, Ripe and Atresic. Four maturity stages were created based on macroscopic and microscopic morphological observations, as well as on analysis of the gonadossomatic index (GSI): Rest, Maturation, Ripe and Spawned

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Author Biography

Erico Luis Hoshiba Takahashi, UNESP

Possui Bacharelado e Licenciatura em Ciências Biológicas pela Universidade Estadual Paulista Júlio de Mesquita Filho - Campus de Rio Claro (2004) e Mestrado em Aqüicultura pelo centro de Aquicultura da Universidade Estadual Paulista Júlio de Mesquita Filho (2006). Tem experiência na área de Zoologia e Aquicultura, atuando principalmente nos seguintes temas: Ictiologia, reprodução e ecologia de peixes Currículo Lattes

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Published

2008-03-28

How to Cite

Takahashi, E. L. H., Gointein, R., & Nakaghi, L. S. O. (2008). Ovarian organization and maturity stages of armored catfish Hypostomus strigaticeps (Siluriformes, Loriicaridae) - DOI: 10.4025/actascibiolsci.v30i1.1474. Acta Scientiarum. Biological Sciences, 30(1), 107-112. https://doi.org/10.4025/actascibiolsci.v30i1.1474

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Issue

Vol 30 No 1 (2008)

Section

Zoology

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